Turtle Fudge Skillet Cake

Preheat the oven to 350 degrees F (175 degrees C). Grease and flour the bottom and sides of a 12-inch stainless steel, oven-safe skillet with shortening and flour, tapping out any excess flour.

Combine cake mix, water, eggs, and oil in a large bowl; beat with an electric mixer on low speed until moistened. Increase speed to medium and beat for 2 minutes, scraping bowl occasionally. Pour batter into the bottom of the prepared skillet.

Bake, uncovered, in the preheated oven until a toothpick inserted into the center comes out clean, 30 to 35 minutes.

Cool on a wire rack for 5 minutes. Run a table knife around the edges to loosen and carefully invert onto a large round platter. Let cool, about 30 minutes.

Meanwhile, combine 1/2 of the caramel topping with the baking chocolate in a microwave-safe bowl. Microwave, uncovered, on high until chocolate is melted, about 30 to 60 seconds. Stir mixture until combined and smooth; carefully spread over the cake.

Sprinkle cake with pecans and drizzle remaining caramel topping over top. Let stand until topping is set. Cut into wedges to serve.